function popCertificado(imageURL,imageTitle){
imgWin=window.open('about:blank','','scrollbars=yes, width=670,height=570,left=0,top=0');
with (imgWin.document){
writeln('Grupo OV - Certificados');
writeln('');
writeln('')
writeln('function doTitle(){document.title="'+imageTitle+'";alert("lo llamo")}');
writeln('');
writeln('');
writeln('
');
}
}